Other teams will offer more than we will. If he gets signed and traded I have a strong inkling it'll be to Houston. As a rental he could end up a bunch of places.

I already commented on this in another thread. To my knowledge, the new CBA does not allow a 5th year on S&T transactions, so there is no reason for a team like Houston to work with Atlanta to get Smith a 5th year on his contract and keep him happy. This summer Houston has enough cap space to sign Smith outright. If Houston was willing to pay him the max, and Smith wanted to go there, they'd just sign him as an FA. There is no point in Houston giving up an asset when they don't have to do it.

This summer the only teams willing to do a S&T for Smith will be the ones who don't have enough cap space to sign him outright.